Hinge for molding flasks



J. 'FISHER.

HINGE FOR MOLDING FLASKS. APPLICATION'FILE'D APR. 23. 1921.

Patented May 16, 1922.

If I AM tH%TE@ STATES PATENT QWWQEG JOHN FISHER, OF LOS ANGELES, CALIFORNIA.

HINGE FOR MOLDING FLASKS.

Application filed April 23, 1921.

To all whom it may concern Be it known that LJOI'iN-FISHER, a citizen of the United States, residing at Los Angeles,-in the county of Los Angeles and State of California, have invented new and useful Improvements in Hinges for Mold iug Flasks, of which thB'fOllOWlIlgiS a specification.-

This invention relates to moldingflasks having a hinge connection between the cope and dragot the flask which is otthe same generaltype shown in my co-pending application, for eccentric hinges for molding flasks, Serial No. 446,792, flled February 21, 1921.

The present invention provides brackets for thehinge members so arranged thatthe cope and. the drag may each. be readily swung open. The hinge connection shown in the presentapplication also provides for ready adjustment thereof so as to aecome modate patternzplates of di'llerent thicknesses hetweenthe cope and drag of the flask. The improved construction also permits. of the mounting of the hinge connection upon flasks of .diiierentsizes.

The invention will be readily understood from the following description of the accompanying, drawings, in which Figure 1 is a perspective view showing the cope and drag of a flask in position with a pattern plate between the same.

Fig. 2 is a similar view showing in detail one end of the hinge connection provided between the cope and drag.

Fig. 3 is a side elevation of the flask showing the hinge connection and partly in axial section.

Fig; 4 is an end view of the hinge connection provided between the cope and drag of a flask.

Fig. 5 is an axial section :on thciline 55 of Fig. i.

In the drawings I have shown the improved hinge connection as employed in connection with a molding flask including a usual cope 1 and a drag 2, the latter being provided with upwardly projecting guide pins 3 co-operating -with guide lugs 4 formed upon the cope. A pattern plate 5 is adapted to be received between the cope and the drag and is provided with lugs 6 through which pins 3 are adapted to be received, so as to be engaged by guide lugs e and thus accurately position the cope, pattern plate and drag relative to one another.

Specification of Letters Patent.

Patented May 316, 1922..

Serial No. 463,929.

The hinge connection is flI'lrBCCGlltl'lC arrangement as is set -forth in my above nientioned co-pending application, in order that the cope and drag may be moved toward one another or shifted apart a sufficient distance to permit of insertion of the pattern plate, through shifting of the axis of the hinge connection.

The present invention provides such an eccentric hinge connection which is also arranged for adjustment thereof so that pattern plates of varying thickness may be received between the cope and drag. I

For this purpose hinge brackets 7 are provided at one side of the rope and are formed with projecting l'iin-ge lugs 8 having bearing slots 9 in their ends. Hinge brackets 10 are provided upon the drag in linewith brackets T and are formed with projecting hinge lugs 11 spaced from one another and having alincd bearing apertures 12 in their ends Eccentric bearing sleeves 13 are journaled in the bearings 12, and a bearing rod 1 L is received through the eccentric bearing sleeves 13 at each hinge with the portion of this rod between bearing lugs 11 of each hinge forming an eccentric pintle 15 oi reduced diameter and adapted to bereceived in. the bearing slot 9 of hinge lug 8.

The eccentric bearing sleeves 13 are readily rotatable and may be held in adjusted position with relation to bearing rods 1% by set screws 16. It will be noted that such an adjustment of the eccentric sleeves will raise or lower the axis of bearing rods 1% and will subsequently vary the movement of pintles 15 when the bearing rods and the eccentric sleeves fixed thereon, are rotated. It will be understood that, rotation of the bearing rods. and the eccentric. bearing sleeves will cause a shifting of the axis of the hinge connection thus provided between the cope andndrag, and that the degree oi said shitting may becontrolled by adjustment of the eccentric bearing sleeves with relation to the bearing rods.

In practice the eccentric bearing sleeves are adjusted so that the shifting of the axis of the hinge connection, which may be obtained, will be equal to the thickness of the pattern plate which it is desired to employ between the cope and the drag.

\Vhen it is desired to insert the pattern plate between the cope and drag, the bearing rods and the eccentric bearing sleeves fixed thereto, are rotated so as to space the cope and drag, and the cope may then be readily swung open. In similar manner the spaced cope and drag may be swung apart for removal of the pattern plate, and after removal of the same the bearing rods and the eccentric sleeves fixed thereto are rotated so as to shift the hinge connection into a position where the cope will fit tightly upon the drag when subsequently swung closed. The mold is thus made ready to receive the metal.

The frame of the cope and drag are each made in two parts comprising respectively a side and end wall so that said frames may be swung open. For this purpose brackets 7 and 10, at one end of the flask, are made as angle brackets having the angular extensions 20 and 21 respectively. These angle brackets are secured to an adjacent side and end wall of the frames so as to rigidly con- .nect the same.

The opposite side and end wall of the frame are formed as rigid structures and are hinged to the side walls of the frame which carry the hinge connection between the cope and drag. For this purpose the brackets 7 and 10, at the end of the. side walls of the frame which are hinged to the end walls of the frames, are shown as hinge brackets having the hinged extensions 22 and 23 respectively. These extensions are secured to the adjacent end walls of the frames, and as a consequence the frames are formed in two sections adapted to be readily swung apart.

The meeting edges formed between the relatively swinging sections of the frames are provided with suitable connecting means for maintaining the frames in closed .position. These connecting means are shown as clips 2% preferably upon the side walls of' the frames and overlying the adjacent end walls which are provided with suitable lugs 25 adapted to be received in co-operating openings provided in the spring clips.

In practice it is often found desirable to raise and lower the hinge connection between the cope and drag, and for this purpose b'ackets 7 and 10, as well as the extensions of the same, are connected to the walls of the cope and drag by means of screws 26 received through elongated slots 27 provided in said brackets.

t will often be found desirable to employ the improved hinge connection, as thus described, with flasks of varying length, and for this purpose the bearing rods 1a are preferably connected by abearing sleeve 30, the bearing rods forming telescopic connections with said bearing sleeve, and being arranged to be adjustably positioned with relation to said bearing sleeve, as by means of pins 31 received through any one of a series of alined openings 32 extending through the bearing sleeve and the ends of the bearings rods telescoped within the same.

lVhen the hinge connection, as thus described, is shifted so as to move the cope and drag away from or toward one another, said hinge connection is preferaby arranged to be held in such shifted positions, and for this purpose abutment lugs 34 extend beyond hinge lugs 11 and are adapted to be impinged by actuating arms 35 carried by collars 36 fixed upon eccentric sleeves 13 by suitable set screws 37.

The actuating arms 35 at the respective hinges of the hinge connection preferably extend in opposite directions from the axis of the hinge connection, so that one of said arms will impinge its abutment lug when the cope and drag are moved away from one another, while the other actuating arm will impinge its abutment lug when the cope and drag are moved toward one another, through rotatable adjustment of the hinge connection.

Various changes may be made without departing from the spirit of the invention as claimed.

What is claimed is:

1. A molding flask comprising a cope and drag having a hinge connection including bearings at opposite ends of said flask and a bearing rod journaled in said bearings, and means for adjusting the length of said bearing rod to accommodate the hinge connection to flasks of varying length.

2. A molding flask comprising a cope and drag having a hinge connection arranged for shifting of the axis thereof relative to the flask, and means for adjustably limiting the shifting of said axis.

In testimony whereof I have signed my name to this specification.

JOHN FISHER. 

